I've noticed that if I log my breakfast, I eat better all day, even if it's the only meal I log.
Willpower is a limited resource, so whenever you can, find easy ways to do what you want , and reserve that will power for the harder things to stick with.
Having my exercise equipment in the central area of my home makes it easier for me to work out every day. It gets rid of the "out of sight, out of mind" problem!!
Give yourself regular little non-food rewards for making good choices and resisting temptation - a new lip gloss, or new single, or a bunch of flowers! Treat yourself to a non-food goodie instead of fast food.